OK, let's work through this together. We're starting with 459 and we're going to multiply it by 40, which means we add 459 to itself 40 times.
Step 1: 0 + 459 = 459
Step 2: 459 + 459 = 918
Step 3: 918 + 459 = 1377
Step 4: 1377 + 459 = 1836
Step 5: 1836 + 459 = 2295
Step 6: 2295 + 459 = 2754
Step 7: 2754 + 459 = 3213
Step 8: 3213 + 459 = 3672
Step 9: 3672 + 459 = 4131
Step 10: 4131 + 459 = 4590
Step 11: 4590 + 459 = 5049
Step 12: 5049 + 459 = 5508
Step 13: 5508 + 459 = 5967
Step 14: 5967 + 459 = 6426
Step 15: 6426 + 459 = 6885
Step 16: 6885 + 459 = 7344
Step 17: 7344 + 459 = 7803
Step 18: 7803 + 459 = 8262
Step 19: 8262 + 459 = 8721
Step 20: 8721 + 459 = 9180
Step 21: 9180 + 459 = 9639
Step 22: 9639 + 459 = 10098
Step 23: 10098 + 459 = 10557
Step 24: 10557 + 459 = 11016
Step 25: 11016 + 459 = 11475
Step 26: 11475 + 459 = 11934
Step 27: 11934 + 459 = 12393
Step 28: 12393 + 459 = 12852
Step 29: 12852 + 459 = 13311
Step 30: 13311 + 459 = 13770
Step 31: 13770 + 459 = 14229
Step 32: 14229 + 459 = 14688
Step 33: 14688 + 459 = 15147
Step 34: 15147 + 459 = 15606
Step 35: 15606 + 459 = 16065
Step 36: 16065 + 459 = 16524
Step 37: 16524 + 459 = 16983
Step 38: 16983 + 459 = 17442
Step 39: 17442 + 459 = 17901
Step 40: 17901 + 459 = 18360

So, 459*40 = 18360